/*
 * Copyright 2010-2020 Alfresco Software, Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.activiti.core.el.juel.tree;

/**
 * Function node interface.
 *
 * @author Christoph Beck
 */
public interface FunctionNode extends Node {
    /**
     * Get the full function name
     */
    public String getName();

    /**
     * Get the unique index of this identifier in the expression (e.g. preorder index)
     */
    public int getIndex();

    /**
     * Get the number of parameters for this function
     */
    public int getParamCount();

    /**
     * @return <code>true</code> if this node supports varargs.
     */
    public boolean isVarArgs();
}
